Fluid receptacle and closure assembly



July 23, 1968 R. w. DOROFF 3,393,961

FLUID RECEPTACLE AND CLOSURE ASSEMBLY Filed May 6, 1966 2 Sheets-Sheet 1 INVENTQR RICHARD W. DOROF F BY 860,000 and Sha iro ATTORNEYS July 23, 1968 R. w. DOROF'F 3,393,961

FLUID RECEPTACLE AND CLOSURE ASSEMBLY Filed May 6, 1966 2 Sheets-Sheet 2 INVENTOR RICHARD W. DOROFF' BY Ska aim cma Ska aim ATTORNEYS United States Patent ice 3,393,961 FLUID RECEPTACLE AND (ILOSURE ASSEMBLY Richard W. Doroif, Baltimore, Md, assignor of fifty percent to Robert Larkins, Baltimore, Md. Filed May 6, 1966, Ser. No. 543,297 8 Claims. (Cl. 401-439) This invention relates to fluid receptacle and closure assemblies and, more particularly, is concerned with fluid receptacles of the nail polish bottle type.

For many years, nail polish has been typically purveyed to the public in small glass bottles which are provided with an upstanding neck terminating in a bottle opening. Screw threads are provided on the outer surface of the neck and cooperate with screw threads located on a cap to be retained thereon. The cap usually comprises a dependent shaft which has an applicator brush at its lower, distal end. When the cap is screwed on the neck and the bottle contains nail polish fluid, the brush is sub merged in the polish. When a woman desires to apply nail polish to her nails, she unscrews the cap and with draws the brush from the bottle. She will then return the brush to the bottle to again load the brush with the polish and repeat the process until nail polish has been applied to all of her nails. At this time, she returns the brush to the bottle and again screws on the cap.

Although nail polish receptacles of this type have proven to be generally satisfactory and have been widely adopted, they are subject to serious drawbacks. When the brush is withdrawn from the bottle, it tends to be over-saturated with nail polish fluid. As a result, there is a tendency for drippings of nail polish to accumulate on the lip of the bottle and on the screw threads on its neck. In addition, a woman will frequently wipe off the excess nail polish fluid from the brush on the lip or neck of the bottle and further cause nail polish to accumulate thereon. Unless these accumulations of nail polish are wiped off immediately, the nail polish will harden after the cap is screwed back on the bottle. This will cause the cap to become glued in place on the bottle. Frequently, a woman will not have sufficient strength to overcome the bond thus created between the cap and the bottle. As a result, bottles of nail polish are often discarded before the contents thereof have been used to the great annoyance of the consumer.

Accordingly, it is the principal object of this invention to provide an improved fluid receptacle and fluid receptacle closure assembly which will avoid the foregoing problem.

A further object of the invention is the provision of a nail polish bottle which will tend substantially to prevent the accumulation of nail polish fluid on the cap securing screw threads upon the withdrawal of an applicator brush from the bottle.

An additional object of the invention is the provision of an adaptor to be applied to conventional nail polish bottles to modify them to avoid the aforementioned problem.

Another object of the invention is the provision of a new and improved nail polish bottle which, as one integral structure, will avoid the aforementioned problem.

Other objects of the invention include the provision of an improved nail polish bottle cap for use with nail polish bottles of the invention and the provision of an adaptor for conventional nail polish bottle caps so that they may be used in assemblies of the invention.

Another problem frequently encountered with conventional prior art nail polish bottles relates to the ease with which they may tip over and dump their contents. A further object of the invention is, thus, the provision of a nail polish bottle structure which will tend to avoid spill- 3,393,961 Patented July 23, 1968 age of nail polish fluid upon tipping over of the bottle.

Briefly, according to the present invention :a nail polish bottle is provided with a relatively wide shelf or shoulder wall extending outwardly from the nail polish bottle opening. The screw threads for securing the nail polish bottle cap to the bottle are located on a vertical wall at the outer periphery of the shelf or shoulder wall. The nail polish bottle cap is provided with an enlarged shoulder or flange portion having a depending skirt with screw threads which cooperate with the screw threads on the vertical wall portion of the bottle. In addition to the usual depending shaft terminating in an applicator brush at its distal end, the cap is provided with stopper means about the shaft so that when the cap is screwed onto the bottle the stopper means will seat in the nail polish bottle opening with the shaft and applicator brush extending through the opening into the bottle and its contents. In accordance with the teachings of this invention, the vertical wall portion is spaced laterally outwardly from the nail polish bottle opening to an extent which is sufficient to inhibit nail polish wipings and drippinigs from the nail polish applicator bl'llSh, as it is withdrawn from the nail polish bottle, from accumulating upon the screw threads of the bottle. In addition, the relatively wide flange provided by the shelf or shoulder wall portion will tend to inhibit spillage of nail polish fluid from the bottle should it be tipped over and also provide an increased mechanical advantage for unscrewing the cap.

As contemplated in certain embodiments of the invention, the vertical wall portion may be provided in the form of an upstanding rim to reduce further the likelihood of nail polish fluid from accumulating on the screw threads of the nail polish receptacle. The shelf or shoulder wall portion may also extend outwardly from a point on the neck of the bottle which is below the bottle opening to move the screw threads on the vertical wall still further from the opening. The shelf or shoulder wall portion and vertical wall portion of the nail polish bottle may be made integral with the bottle. On the other hand, it is also contemplated by the invention that these portions of the nail polish bottle receptacle could be provided as a separate adaptor portion to be secured to the neck of a conventional nail polish bottle. In this case, the adaptor will be provided with an inner vertical wall portion provided with screw threads on its inner surface which will cooperate with the conventional screw threads provided on the neck of a conventional nail polish bottle. In order to prevent loosening of the screw thread connection between the inner vertical wall portion cf the adaptor and the neck of the bottle when the cap is unscrewed from the adaptor, the set of screw threads on the cap and outer wall portion and the set of screw threads on the neck and inner wall portion are made of opposite hand. It is also contemplated by the invention that an adaptor be provided for converting a conventional nail polish bottle cap for use with nail polish bottle assemblies of the invention. In such a case, the adaptor will be in the form of a discoidal member having a central opening adapted to receive the shaft of the nail polish applicator brush and having a depending skirt at its outer periphery provided with screw threads on its inner surface to cooper-ate with the screw threads on the nail polish bottle assembly and provided with a stopper protuberance about the shaft opening adapted to seat in the opening of a nail polish bottle.

The foregoing and other objects, advantages, and features of the invention and the manner in which the same are accomplished will become more readily apparent upon consideration of the following detailed description of the invention when taken in conjunction with the accompanying drawings, which illustrate preferred and exemplary embodiments, and wherein:

FIGURE 1 is an exploded perspective view, partially broken away, showing a first embodiment of the invention;

FIGURE 2 is a front elevational view of the embodiment of FIGURE 1, partially in section and partially broken away;

FIGURE 3 is a front elevational view, partially in section, showing an embodiment of a nail polish bottle cap of the invention;

FIGURE 4 is a front elevation view, partially in section and partially broken away, showing an embodiment of a nail polish bottle receptacle of the invention;

FIGURE 5 is an exploded perspective view, partially in section and partially broken away, of another embodiment of this invention;

FIGURE 6 is an exploded perspective view, partially in section and partially broken away, showing still another embodiment of the invention; and

FIGURE 7 is an exploded perspective view, partially in section and partially broken away, showing yet another embodiment of the invention.

Referring first to FIGURES 1 and 2, it will be seen that a conventional glass nail polish bottle 10 and plastic cap 11 are modified in accordance with the teachings of the present invention. The nail polish bottle 19 is provided with an upwardly extending neck 12 having screw threads 14 on the outer surface thereof for cooperating with screw threads 15 on conventional nail polish bottle cap 11. The neck 12 terminates in a narrow lip 16 which defines a bottle opening 18. As previously explained, with this conventional nail polish bottle structure the removal of a nail polish applicator brush through the opening 18 will tend to be accompanied by wipings or drippings of nail polish fluid from the brush onto lip 16 and screw threads 14, thereby interfering with the cooperation between the screw threads 14 of neck 12. and screw threads 15 on the conventional nail polish bottle cap 11 by hardening therebetween and causing the cap to become bonded to the neck of the bottle.

In the embodiment shown in FIGURES l and 2 this problem is avoided by the provision of an adaptor 20, which may be formed from a molded thermoplastic or thermosetting material. The adaptor 20 comprises an inner cylindrical upstanding wall portion or collar 22 having screw threads 24 on its inner surface adapted to cooperate with the screw threads 14 on neck 12 of the conventional nail polish bottle 10. The adaptor 20 is also provided with an annular shelf or shoulder wall portion 26 which extends laterally outwardly from the inner cylindrical wall or rim 22. The outer periphery of wall 26 is bounded by an outer vertical cylindrical wall portion 28 which is in the form of an upstanding rim. The outer surface of rim 28 is provided with screw threads 30.

The conventional nail polish bottle cap 11 has a handle portion 34 and a depending shaft 36 which has an applicator brush 38 at its distal end. It is to be understood that the handle portion 34 of cap 11 comprises a skirt portion 40 the inner surface of which is provided with screw threads 15 ordinarily intended to cooperate with the screw threads 14 of the conventional nail polish bottle 10. In order to adapt the conventional nail polish bottle cap 11 for use with a modified nail polish bottle of the present invention, a molded plastic adaptor 42 is provided. The combination of the conventional cap and the cap adaptor form a cap assembly. As shown most clearly in FIGURE 2, the adaptor 42 comprises a discoidal portion 44 having a central opening 46 adapted to receive brush shaft 36 with a tight fit. The discoidal portion 44 is provided with a depending skirt 48 at its outer periphery, the skirt being provided on its inner surface with screw threads 50, which are adapted to cooperate with screw threads on the outer surface of vertical wall portion 28 of adaptor Ztl. The cap adaptor 42 is also provided with a stopper protuberance 52 surrounding shaft opening 46. As shown in FIGURE 2, brush shaft 36 is forced through opening 46 and adaptor 42 is slid upwardly along the shaft until it abuts cap 11. It is to be understood that adaptor 42 may be keyed or glued to cap 11 to prevent relative rotation therebetween. When adaptor 42 is screwed upon adaptor 2th, the stopper protuberance 52 will seat in Opening 18 of bottle 10 to seal it and prevent nail polish therein from running out of opening 18.

As indicated above, adaptor 20 is fastened to the neck 12 of bottle 14) by means of the cooperation between the set of screw threads 14 and 24, while the cap adaptor 42 is secured to the adaptor 2G by virtue of the cooperation between the set of screw threads 36 and 511. It will be readily understood that turning of cap 11 to unscrew it from adaptor 20 would have a tendency to unscrew the adaptor 26 from the neck 14, if the sets of screw threads 14, 24 and 30, St) were of the same hand. Accordingly, it is contemplated that these sets of screw threads be of opposite hand so that the unscrewing of cap 11 will not have a tendency to unscrew adaptor 2% from neck 12, but, rather, will tend to tighten the screw connection between adaptor 2t and neck 12.

It is to be understood that the shelf or shoulder wall portion 26 of adaptor 20 has sufficient lateral extent outwardly from the inner cylindrical wall portion 22 that it will substantially prevent wipings or drippings of nail polish from applicator brush 38 from accumulating on screw threads 31) of nail polish bottle adaptor 20. This lateral extent is several times as large as the thickness of the wall of the neck 12 of the conventional nail polish bottle and is of the same order of magnitude as, or larger than, applicator brush 38. In operation, the withdrawal of applicator brush 38 through opening 18 will, as in the usual case, cause the accumulation of nail polish fluid on the lip 16 of the bottle and on the upper edge of the inner cylindrical vertical wall 22; but, due to the spacing of the outer vertical cylindrical Wall 28 therefrom, there will be no accumulation of nail polish fluid on screw threads 30. Thus, there will be no tendency of adaptor cap screw threads 50 to become bonded to screw threads 30 of bottle adaptor 20. In order to further reduce this possibility, in the embodiment shown in FIGURES 1 and 2, the shelf or shoulder wall portion 26 is connected to the lower end of inner wall portion 22 to increase the distance between opening 18 and threads 30. Moreover, the outer peripheral rim 28 also serves to shield the threads 30 from such accumulations. It is to be noted that in this embodiment the walls 22 and 28 form a well 54 to receive nail polish wipings and drippings and keep them separated from screw threads 30. In this way, the cooperation between screw threads 30 and 50 is not impeded by accumulations of nail polish bottle fluid hardening therebetween.

It is to be noted also that the enlarged flange created by adaptor 2% will tend to keep the bottle partially upright should it be tipped over. Spillage of nail polish fluid will thus be minimized.

Although the embodiment shown in FIGURES l and 2 employs a modified conventional nail polish bottle cap 11, it is to be understood that a special cap assembly, especially adapted for use with nail polish bottles of the invention, may be provided. As shown in FIGURE 3, such a bottle cap assembly 11a is made of one piece and may be formed of molded thermoplastic or thermosetting material. It includes a handle portion 34a, a shoulder portion 44a extendins laterally outwardly therefrom, and an outer depending peripheral skirt 43a, which is provided with screw threads 56a on its inner surface. A stopper protuberance 520, from which the shaft 36a of a nail polish brush shaft extends, is provided and functions in the same way as stopper protuberance 52 in the embodiment of FIGURES l and 2. As with the previously described embodiment, the screw threads 50a of the cap 11 are adapted to cooperate with screw threads 30 of the nail polish adaptor 20.

While the embodiment of FIGURES 1 and 2 has been described with reference to the employment of an adaptor 20 on a conventional nail polish bottle It), it is to be understood that, as shown in FIGURE 4, a nail polish bottle of the invention may be provided in one integral structure. Thus, in FIGURE 4 it will be seen that a glass nail polish bottle a is provided with an inner neck or vertical wall portion 12a which terminates in a lip 16a defining an opening 18a. A shelf or shoulder wall portion 26a is connected to neck portion 12a at a point below lip 16a and extends laterally outwardly therefrom to an upstanding outer vertical rim or wall 28a, which is provided with screw threads 30a on its outer surface. It will be recognized that the operation of the embodiment shown in FIG- URE 4, with reference to the withdrawal of a nail polish brush therefrom, is essentially the same as the operation of the embodiment of FIGURE 1. That is, the lateral extent of shoulder wall portion 28a is great enough substantially to prevent wipings and drippings from the brush, which will tend to accumulate on lip Ida and inner neck 12a from accumulating on outer screw threads 3% of outer rim 28a. Thus, the screw threads 3dr: will be able to cooperate without interference from such accumulations with the screw threads of a cap such as that shown in FIGURE 2 or FIGURE 3. While the integral bottle 16a is shown in FIGURE 4 as made entirely of a molded piece of glass, it is to be understood that the bottle may be molded of a thermoplastic or thermosetting material.

Although a particular and a preferred configuration of the invention has been already described, it will be understood that certain variant structures embodying the principles of the invention are possible. Examples of such variants are shown in FIGURES 5, 6 and 7.

Turning to FIGURE 5, it will be seen that the nail polish bottle It) is again provided with a neck 12 having screw threads 14 on its outer surface and terminating in a lip 16 defining a bottle opening 18. While the cap may take the form of the cap shown in FIGURES l and 2 or of the integral cap shown in FIGURE 3, it will be as sumed for the sake of the description of this figure that the cap 11 and adaptor 42 shown in FIGURES 1 and 2 are employed. As in the embodiment of FIGURES 1 and 2, an adaptor portion 20b is provided. The adaptor 2012 has an inner depending cylindrical wall ortion or collar 22!) provided with screw threads 2412 on its inner surface. It will be evident from the figure that collar 22b depends from a flat shelf or shoulder wall portion 26b which extends laterally outwardly therefrom and terminates in an outer depending vertical cylindrical wall portion 28b. Screw threads 3012 are provided on the outer surface of vertical wall portion 28b to cooperate with screw threads 50 of cap adaptor 42. It will be understood that the lateral extent of shelf or shoulder wall portion 26b is sufficient substantially to prevent wipings and drippings from brush 38, as it is withdrawn from opening 18, from accumulating on screw threads 30b and thereby interfering with their cooperation with screw threads 50. Again, it should be noted that this lateral extent should be several times the thickness of the wall of neck 14 of the conventional nail polish bottle 10 and be of the order of magnitude of, or larger than, the length of applicator brush 38.

In the embodiment shown in FIGURE 6, an adaptor 20c is employed. Since the cap 11, cap adaptor42, and bottle 10 are essentially the same as those previously described, they will not be described again in detail in connection with this figure. The adaptor 200 has an inner upstanding vertical cylindrical wall portion 220 which is provided with screw threads 240 on its inner surface. A shelf or shoulder wall portion 260 extends laterally outwardly from inner vertical wall portion 220 and terminates in a depending vertical cylindrical wall portion 28c at its periphery. As before, screw threads 300 are provided on the outer surface of vertical wall portion 280 and are adapted to cooperate with screw threads 50 of cap adaptor 42. The operation of this embodiment resembles that shown in previous embodiments in that the lateral extent of shelf or shoulder wall portion 260 is sufficiently great that wipings and drippings from brush 3% will not tend to accumulate on screw threads 30c and thereby impede the cooperation between screw threads 30c and screw threads Stl. In addition, the upstanding inner wall portion 22c tends to increase the distance between bottle opening 18 and the screw threads 300 on outer vertical wall portion 280.

The embodiment shown in FIGURE 7 is shown with reference to the use of an adaptor 20d on a conventional nail polish bottle 10. The adaptor comprises an inner depending vertical cylindrical wall portion 22d which is provided with screw threads l id on its inner surface, which are adapted to cooperate with screw threads 14 on bottle neck 12. A shelf or shoulder wall portion 26d extends laterally outwardly from inner wall portion 22d and terminates in an upstanding vertical wall portion or rim 28d. As in previous embodiments, the outer surface of outer vertical wall portion 28d is provided with screw threads 36d.

The cap 11d has a handle portion 340.; and cap flange 42d, which may be formed integrally with portion 34d, is provided with a discoidal shoulder portion idd and a depending skirt portion ttid. Screw threads 50d are provided on the inner surface of skirt 48d. The depending shaft 36d extends downwardly and centrally of cap 11d and terminates at its lower or distal end with an applicator brush 38d.

Due to the upstanding rim 28d and the depending inner wall portion 22d, the distance between the base of the cap 11d and the opening 18 is greater than in the previously described embodiments. It is, thus, necessary to locate the stopper at a point which is further down the shaft. This is accomplished by placing the stopper 52d on the shaft 36d and spaced below th discoidal wall 44d. The stopper may be an integral part of shaft 36d or a separate member which is slid thereon. As in the previous embodiments, when cap 11d is screwed on adaptor Zticl, the stopper 52d will seat in opening 18 to seal the bottle. This embodiment will tend to function in somewhat the same manner as the previous embodiments in that the lateral extent of shelf or shoulder wall portion 26d is made sufficiently large that wipings and drippings from the applicator brush as it is withdrawn through opening 18 will not tend to accumulate on screw threads 30d. Also, in this embodiment, the upstanding rim 28d will tend to keep such wipings or drippings separated from screw threads 3nd.

It is to be understood with respect to the embodiments shown in FIGURES 5, 6 and 7 that the adaptors 2%, 200, and 2011 could be provided as integral portions of the receptacle 1% in the same manner as is shown in FIG- URE 4. In addition, with respect to the adaptors of these embodiments, it is to be understood that the use of sets of screw threads of opposite hand are to be employed for the reason stated with respect to the embodiment of FIG- URES l and 2.

It is not essential to employ the screw thread securing and fastening means shown in the embodiments described. For example, it would be possible to replace screw threads 14 and 22 by means of some other fastening means such as a key and slot connection therebetween or a snap-on detent arrangement.

While preferred embodiments of the invention have been shown and described, it will be apparent to those skilled in the art that changes can be made without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims. Accordingly, the foregoing embodiments are to be considered illustrative rather than restrictive of the invention, and those modifications which come within the meaning and range of equivalency of the claims are to be included therein.

The invention claimed is:

1. A fluid receptacle closure assembly for use with a nail polish bottle receptacle having an upstanding neck and provided with cap securing thread means on the outer surface of said neck, the sole opening to said receptacle being located at the upper end of said neck, comprising: a receptacle adaptor and a cap assembly; said receptacle adaptor comprising an inner cylindrical vertical wall having threads on its inner surface adapted to cooperate with said thread means on said neck to secure said adaptor thereto, an outer cylindrical vertical Wall having thread means on its outer surface, an annular wall extending horizontally outwardly from said inner vertical wall to said outer vertical wall, the distance between said vertical walls being sufficient to separate a nail polish applicator brush from the threads on the outer surface of said vertical wall to such an extent that wipings and drippings from said applicator brush are not deposited on said threads on said outer surface of said outer vertical wall, at least one of said outer and inner vertical walls extending upwardly from said annular wall when said adaptor is mounted on a neck of nail polish bottle; and said cap assembly comprising a discoidal horizontal wall of greater diameter than said annular wall and having a depending peripheral skirt, said skirt having threads on its inner surface for engaging said threads on said outer vertical wall, a stopper depending from said discoidal wall and adapted to seat in and seal said neck opening, and a shaft depending from said stopper and adapted to extend through said opening to a point within said receptacle, said shaft having an applicator brush at the end thereof.

2. A fluid receptacle closure assembly as recited in claim 1, wherein said inner cylindrical vertical wall extends above said annular wall.

3. A fluid receptacle closure assembly as recited in claim 11, wherein said thread means on the outer surface of said neck and said threads on the inner vertical wall are of one hand and said thread means on said outer vertical wall and said skirt are of opposite hand.

4. A fluid receptacle closure assembly as recited in claim 1, wherein said inner cylindrical vertical wall depends from said annular wall.

5. A fluid receptacle closure assembly as recited in claim 1, wherein said cap assembly comprises a conventional nail polish bottle cap portion and said discoidal horizontal wall is separable therefrom and said stopper is integral with said discoidal wall.

6. A fluid receptacle closure assembly as recited in claim 5, wherein said shaft extends through said discoidal wall and stopper. 7

'7. A fluid receptacle closure assembly as recited in claim 1, wherein said cap assembly further comprises a handle portion integral with said discoidal wall and stopper.

8. A fluid receptacle closure assembly as recited in claim 1, wherein both said outer and inner vertical walls extend upwardly from said annular wall.

References Cited UNITED STATES PATENTS 471,003 3/1892 Higgins 206-15.2

624,934 5/1899 Higgins 401-119 791,309 5/1905 Young 401-121 967,764 8/1910 Hannah 222-367 1,334,344 3/1920 Beatty 215-31 1,607,702 11/1926 Siline et a]. 401-15 1,713,145 5/1929 Perry 215-41 1,949,902 3/1934 Desscr 206-152 1,966,581 7/1934 Conner 401-128 2,001,086 5/1935 Villanyi 401-130 2,157,743 5/1939 Temple 178-8 2,348,515 5/1944 Baumgartner 15-609 XR 2,803,028 8/1957 Flynn 215-43 3,157,905 11/1964 Levy 15-517 FOREIGN PATENTS 11,356 7/1890 Great Britain.

676,268 6/1939 Germany.

1,282,618 12/1961 France.

CHARLES A. WILLMUTH, Primary Examiner.

R. I. SMITH, Assistant Examiner. 

1. A FLUID RECEPTACLE CLOSURE ASSEMBLY FOR USE WITH A NAIL POLISH BOTTLE RECEPTACLE HAVING AN UPSTANDING NECK AND PROVIDED WITH CAP SECURING THREAD MEANS ON THE OUTER SURFACE OF SAID NECK, THE SOLE OPENING TO SAID RECEPTACLE BEING LOCATED AT THE UPPER END OF SAID NECK, COMPRISING: A RECEPTACLE ADAPTOR AND A CAP ASSEMBLY; SAID RECEPTACLE ADAPTOR COMPRISING AN INNER CYLINDRICAL VERTICAL WALL HAVING THREADS ON ITS INNER SURFACE ADAPTED TO COOPERATE WITH SAID TYHREAD MEANS ON SAID NECK TO SECURE SAID ADAPTOR THERETO, AN OUTER CYLINDRICAL VERTICAL WALL HAVING THREAD MEANS ON ITS OUTER SURFACE, AN ANNULAR WALL EXTENDING HORIZONTALLY OUTWARDLY FROM SAID INNER VERTICAL WALL TO SAID OUTER VERTICAL WALL, THE DISTANCE BETWEEN SAID VERTICAL WALLS BEING SUFFICIENT TO SEPARATE A NAIL POLISH APPLICATOR BRUSH FROM THE THREADS ON THE OUTER SURFACE OF SAID VERTICAL WALL TO SUCH AN EXTENT THAT WIPINGS AND DRIPPINGS FROM SAID APPLICATOR BRUSH ARE NOT DESPOSITED ON SAID THREADS ON SAID OUTER SURFACE OF SAID OUTER VERTICAL WALL, AT LEAST ONE OF SAID OUTER AND INNER VERTICAL WALLS EXTENDING UPWARDLY FROM SAID ANNULAR WALL WHEN SAID ADAPTOR IS MOUNTED ON A NECK OF NAIL POLISH BOTTLE; AND SAID CAP ASSEMBLY COMPRISING 